Question: Who is the head of state of South Australia who started in the year 1952?
Paraphrase: In 1952, who was the new head of state of South Australia?
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q35715 p:P35 ?s . ?s ps:P35 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1952')) }